145 results about "Carbon disulfide" patented technology

The invention discloses a rectification mechanism and a carbon disulfide production system containing the same. The rectification mechanism comprises an integrated rectification tower, and an inner cavity of a shell of the integrated rectification tower is sequentially divided into a function-integrated pre-separation and sulfur removal area, a main rectification and hydrogen sulfide removal area and a condensation reflux area from bottom to top in the vertical direction; the pre-separation and sulfur removal area comprises a settling tank arranged at the lower part of the shell, a gathering cover arranged above the inner wall of the settling tank, and a gas rising pipe I arranged above the gathering cover; the invention belongs to the technical field of chemical separation, and achieves the technical effects that multi-stage functions of pre-separation, main rectification, precise purification, final condensation and the like are innovatively integrated in a single tower, so that the fundamental simplification and compactness of the equipment structure are realized; in the traditional process, separate coarse removal, fine removal and finished product towers are replaced by unique expanded settling tanks in the towers, filler layers of integrated plate heat exchangers, tower tops with spiral condensation channels and side-draw systems.

The invention relates to a method for preparing lithium sulfide at low temperature by microwave molten salt assisted carbon disulfide-lithium salt reaction, and belongs to the technical field of key materials of lithium-sulfur batteries and solid-state batteries. The technical problems of high energy consumption, difficulty in inhibiting by-products, insufficient purity and crystal phase stability, difficulty in continuous amplification and the like in the existing lithium sulfide preparation process are solved. Comprising the following steps: step 1, performing crushing, screening and grading treatment on lithium source powder; step 2, placing the treated lithium source powder and molten salt in a closed reactor, and introducing CS2 in a gas or liquid form; 3, applying microwave radiation, and reacting at a gas-solid-liquid multiphase interface to generate lithium sulfide; and 4, cooling the material after the reaction to room temperature, separating and recovering the fused salt to obtain the lithium sulfide powder. The method is low in reaction temperature, low in energy consumption, high in reaction rate, high in product purity and suitable for continuous and industrial production.

The invention belongs to the technical field of mineral flotation, and particularly discloses a xanthate collecting agent and a preparation method and application thereof, and the xanthate collecting agent is obtained by taking ether alcohol, carbon disulfide and caustic alkali as raw materials to react; the xanthate collecting agent is selected from at least one of formulas I-VI. The xanthate collecting agent has the advantages of being free of peculiar smell, easy to degrade, high in yield, high in purity, efficient in mineral flotation and the like, the working environment of the xanthate collecting agent in the production and using process can be effectively improved, operation is easy and convenient, cost is low, and industrial production is easy to achieve.

The invention discloses a lactobacillus brevis SMF L6 strain for improving the characteristic flavor of fermented fish and application thereof, and belongs to the technical field of aquatic product processing. According to the method disclosed by the invention, low-temperature fermentation is carried out by utilizing a sake lactobacillus wide cloth SMF L6 direct vat set fermentation inoculant to regulate and control the flavor; the method can effectively promote the production of flavor substances such as n-hexyl alcohol, eudesmol, 2-ethylhexyl alcohol, 4-platycladi alcohol, linalool, 4-terpene alcohol, alpha-terpilenol, piperonone, beta-myrcene, alpha-terpinene, D-limonene, beta-phellandrene, gamma-terpinene and the like in the fermented fish. The content of pungent smell and fishy smell substances such as acetic acid, p-xylene, o-xylene, trimethylamine, methyl mercaptan and carbon disulfide is reduced.

The invention relates to a heating furnace for carbon disulfide production, and relates to the technical field of carbon disulfide production, the heating furnace comprises a furnace body comprising an outer furnace box body, an inner furnace box body and a supporting pipe; the sulfur supply assembly comprises a combustion chamber, a liquid sulfur pipe and a spray head; the methane supply assembly comprises a methane gas pipe, a transfer piece, a communicating pipe and a mixing plate; the mixing assembly comprises a rotating blade, a driving fan blade, a bevel gear ring, a bevel gear and a flow guide fan blade; the exhaust assembly comprises a first exhaust pipe, a second exhaust pipe, a third exhaust pipe and a fourth exhaust pipe; by uniformly introducing gaseous sulfur and methane gas into the inner furnace box body and stirring and turning the gaseous sulfur and methane gas through the mixing plate, sulfur and methane are easily and uniformly mixed, the yield of carbon disulfide can be increased, and efficient production of carbon disulfide is facilitated. The method has the effect of improving the mixing degree of sulfur and methane.

The invention provides a fullerene pyrrolidine enantiomer mediated cholesteric liquid crystal with circular polarization luminescence property and nonlinear anti-saturated absorption property, and a preparation method and application thereof. The method comprises the following steps: dissolving C60, paraformaldehyde and (R / S)-(+ / -)-alpha-methylbenzylamine in an organic solvent, and carrying out heating reflux reaction to obtain fullerene pyrrolidine enantiomer molecules; dissolving in carbon disulfide to obtain an enantiomer solution; dissolving achiral dye molecules in a solvent to obtain a dye solution; and dropwise adding the enantiomer solution and the dye solution into thermotropic liquid crystal molecules, and drying to obtain the thermotropic liquid crystal. The method is simple, the obtained cholesteric liquid crystal system shows a characteristic fingerprint texture and has a periodic spiral structure, and the doping proportion of chiral molecules is easy to adjust; the composite system has good time stability and is not prone to phase separation; the liquid crystal platform shows good circular polarization luminescence performance and third-order nonlinear optical property, and is a cholesteric liquid crystal platform with an integrated function.

The utility model provides rapid enrichment equipment for light hydrocarbon oil, medium hydrocarbon oil and crude phenol in medium and low temperature coal tar, which adopts five solvent storage tanks to store and take recovered solvents (acetone, carbon disulfide, petroleum ether, methanol and acetonitrile) in each step so as to be recycled in cycles; carrying out deliming treatment on the medium-low temperature coal tar by using an acetone / carbon disulfide mixed solvent; petroleum ether and methanol, petroleum ether and acetonitrile, and methanol and carbon disulfide are used for carrying out step-by-step double-solvent layered extraction on the de-ashed tar. The device disclosed by the utility model realizes rapid enrichment of target components in medium and low temperature coal tar, provides extract oil which is simple in composition and easy to process for subsequent secondary upgrading, and solves the problems of high energy consumption, difficulty in large-scale commercialization and the like in the prior art.

The invention discloses a nitrogen / phosphorus co-doped fullerene material and a preparation method and application thereof.The nitrogen / phosphorus co-doped fullerene material is composed of fullerene, melamine and ammonium hypophosphite, the fullerene serves as a carbon skeleton precursor to form a rich pentagonal topological defect structure in the high-temperature pyrolysis process, and the nitrogen / phosphorus co-doped fullerene material is obtained; melamine and ammonium hypophosphite are respectively used as a nitrogen source and a phosphorus source, are decomposed at a high temperature and are uniformly doped with nitrogen and phosphorus atoms in a carbon skeleton. The method comprises the following steps: dissolving fullerene in carbon disulfide, adding melamine, uniformly mixing, heating until the carbon disulfide is completely volatilized, adding an ammonium hypophosphite solution, and pyrolyzing in an inert atmosphere to obtain the nitrogen / phosphorus co-doped fullerene material. The electrocatalyst provided by the invention has a relatively large specific surface area, can provide more active sites, and also can provide higher mass transfer efficiency and HO selectivity due to rich pores and a topological defect structure, so that the oxygen reduction reaction rate can be improved.

This invention belongs to the field of mineral flotation technology, and discloses a flotation collector for non-ferrous metal sulfide ores, its preparation method, and its application. The collector uses O,O-dialkyldithiophosphate as a starting material, and reacts sequentially with a halocarboxylic acid ester, hydrazine hydrate, potassium hydroxide, and carbon disulfide in anhydrous ethanol in a three-step reaction to obtain the target product, O,O-dialkyldithiophosphate hydrazide-N′-dithiocarbamate potassium. Its molecular structure simultaneously contains three active groups: a dithiophosphate group, an hydrazide group, and a dithiocarbamate group. This invention achieves efficient process connection and smooth transition by optimizing the material ratio, temperature, and time of each reaction step, and has advantages such as mild reaction conditions, simple operation, few side reactions, high yield, and stable product. The prepared collector exhibits excellent collecting performance and good selectivity for non-ferrous metal sulfide ores such as chalcopyrite, and is suitable for widespread application in sulfide ore flotation processes.

The invention discloses an optimized synthesis method of bis (pentamethylene) thiuram tetrasulfide, which comprises the following steps: adding sulfur and piperidine into a reaction system in batches by utilizing the solubility difference of sulfur in carbon disulfide and water, so that condensation reaction is carried out step by step, the conversion rate of sulfur is increased, and the reaction system is controlled to keep constant temperature; and slowly dropwise adding hydrogen peroxide to carry out oxidation reaction to obtain the rubber vulcanization accelerator DPTT. According to the method, the condensation reaction process is split, so that the residual quantity of the intermediate product piperidine dithiocarbamate (PDC) and free sulfur is greatly reduced, and the content of bis (pentamethylene) thiuram tetrasulfide and the content of bis (pentamethylene) thiuram hexasulfide (DPTH) in the product are relatively stable. The total yield is stabilized at 96% or above, the initial melting point is stabilized at 112-114 DEG C, the PDC in the mother liquor is less than or equal to 6%, the free sulfur is less than or equal to 3%, the COD in the mother liquor is less than or equal to 3000 mg / L, the production operation is convenient and efficient, and the method has important industrial application value.

The invention belongs to the technical field of chemical separation, and discloses a two-stage low-temperature condensation coupling compression separation high-purity hydrogen sulfide purification process and system. The system consists of a two-stage low-temperature condensation unit, a hydrogen sulfide compression unit and a hydrogen sulfide collection unit, the two-stage low-temperature condensation unit comprises a hydrogen sulfide liquid separation tank, a hydrogen sulfide low-temperature cooler, a hydrogen sulfide low-temperature liquid separation tank, a hydrogen sulfide heat exchanger and a hydrogen sulfide saline water liquid separation tank. Hydrogen sulfide raw material gas containing carbon disulfide impurities is sequentially introduced into a two-stage low-temperature condensation unit, carbon disulfide is liquefied and separated out preferentially, low-temperature water is adopted in the first stage, and materials subjected to cryogenic compression throttling are adopted in the second stage for heat exchange; pressurizing and compressing the primarily purified hydrogen sulfide gas-phase component, and then condensing and separating to remove trace carbon disulfide and recover cold energy, thereby finally obtaining the high-purity hydrogen sulfide with the purity of more than or equal to 99.95%. According to the invention, a low-temperature two-stage low-temperature condensation-pressurized compression condensation coupling separation technology is adopted, and deep removal of carbon disulfide is realized under the condition that a third component is not introduced.

Methods for producing olefins through hydrocarbon steam cracking include passing a hydrocarbon feed that includes one or more hydrocarbons to a hydrocarbon cracking unit and passing one or more sulfur-containing compounds to the hydrocarbon cracking unit. The sulfur-containing compounds include at least hydrogen sulfide gas, and a flow rate of the sulfur-containing compounds to the hydrocarbon cracking unit is sufficient to produce a molar concentration of elemental sulfur in the hydrocarbon cracking unit of from 10 ppm to 200 ppm. The methods include cracking the hydrocarbon feed in the hydrocarbon cracking unit to produce a cracker effluent and contacting the cracker effluent with a quench fluid in a quench unit to produce at least a cracked gas and a first pygas. The first pygas has a concentration of carbon disulfide less than 50 ppmw based on the total mass flow rate of the first pygas.

The present disclosure relates to a method for manufacturing a regenerated material capable of effectively utilizing carbon contained in a battery material. The method for producing a recycled material includes the following steps (a) and (b). Step (a): preparing a battery material. Step (b): carbon disulfide is generated by reacting carbon and sulfur contained in the battery material.

The utility model discloses a carbon disulfide recovery device utilizing liquid nitrogen cryogenic condensation. The carbon disulfide recovery device comprises a tail gas conveying piece, a pre-cooling condenser, a gas-liquid separator, a low-temperature condenser, a liquid nitrogen condenser, a liquid nitrogen storage tank and a carbon disulfide collection tank. The carbon disulfide recovery device is provided with the pre-cooling condenser and the gas-liquid separator, pre-condensation is carried out through the pre-cooling condenser, the moisture content in carbon disulfide tail gas can be effectively reduced, and the problems of frosting, corrosion and equipment blockage in the follow-up process are solved. The gas-liquid separator further performs water removal treatment on the carbon disulfide tail gas to prevent a large amount of water vapor from entering the low-temperature condenser and the liquid nitrogen condenser and prevent the water vapor from being condensed into frost in an internal pipeline, so that the problem of ice blockage of the low-temperature condenser and the liquid nitrogen condenser is prevented, and the shutdown cleaning requirement caused by frosting and scale deposition can be reduced; and labor and maintenance costs are saved.

The utility model provides a carbon disulfide cooling system. The carbon disulfide cooling system comprises a first-stage condenser, a second-stage condenser and a third-stage condenser which are arranged at the gas phase outlet end of a sulfur and carbon catcher. The liquid phase output ends of the first-stage condenser and the second-stage condenser are connected with a crude carbon disulfide buffer tank, and the liquid phase output end of the third-stage condenser is connected with a reflux buffer tank. The output end of the reflux buffer tank is connected with a sulfur capture reflux pump, and the sulfur capture reflux pump is connected with the liquid phase input end of the sulfur and carbon capture device through a reflux pipeline. And the outlet end of the crude carbon disulfide buffer tank is provided with a liquid phase recovery pipeline communicated with the separation tower. A material inlet is formed in the side part of the sulfur and carbon capturing device, and external mixed gas enters from the material inlet. A material outlet is also formed in the bottom of the sulfur and carbon capturing device and is used for discharging excessive sulfur. According to the utility model, the energy consumption of the refrigerating machine required by the subsequent three-stage condenser is reduced, the temperature of the gas phase outlet of the sulfur and carbon capturing device is also reduced, and the cooling recovery of CS2 is more facilitated.

The present application pertains to a method of making carbon disulfide. The method comprises reacting methane and sulfur under conditions sufficient to produce carbon disulfide, hydrogen disulfide, and heat. At least a portion of the produced hydrogen disulfide is reacted with methane under conditions sufficient to produce a mixture comprising carbon disulfide and hydrogen. Advantageously, at least a portion of the heat from reacting methane and sulfur is employed in the reacting of at least a portion of the produced hydrogen disulfide with methane.

The purpose of the present invention is to provide spherical microparticles of cellulose ether having a low degree of substitution, which can contribute to improving the feeling of use of a cosmetic composition to be used regardless of whether or not carbon disulfide is used. The purpose is achieved by spherical cellulose ether microparticles having a low degree of substitution in which the volume-based average particle diameter (D50) of primary particles measured by dry laser diffraction is 1-30 [mu] m, the true sphericity is 0.75-1.0, and the surface smoothness is 75-100%.

The present invention relates to the field of carbon disulfide production, and specifically relates to an acidic wastewater treatment system for flue gas purification in a sulfuric acid plant, which includes a waste acid tank, a homogenization tank, a precision filter, a dilute acid dosing tank, and a circulation water tank. A waste acid pump is provided in the waste acid tank for transporting the waste acid to the homogenization tank. A pickling pump is provided in the homogenization tank for transporting the acid solution to the precision filter. The outlet of the precision filter is communicated with the dilute acid dosing tank. The circulation water tank is provided with a dilute acid addition channel and a metal ion slow-release agent addition channel, and the outlet of the dilute acid dosing tank is communicated with the dilute acid addition channel. It can reduce the consumption of lime and the discharge amount of sewage, improve the concentration ratio of circulating water, reduce water consumption and sewage discharge.

A system for hydrogen production including a first separation system (10), a first purification unit (17), a second purification unit (19), an oxygen scavenger (25), a catalytic reactor (29), a second separation system (33), and a liquefier (39). A method for hydrogen production including separating oxygen-containing components from a feed (5) also containing hydrogen sulfide and methane. The method further includes separating the hydrogen sulfide from the methane and feeding the hydrogen sulfide (13) to a first purification unit (17). The method includes feeding the methane (15) to a second purification unit (19). The method further includes feeding the purified hydrogen sulfide and methane to an oxygen scavenger unit (25) to remove residual oxygen before reacting the two streams in a catalytic reactor (29). The method includes separating the gaseous hydrogen and liquid carbon disulfide (31) exiting the catalytic reactor (29) and then purifying and liquefying the gaseous hydrogen stream (34) to produce a purified liquid hydrogen stream (41).

This invention discloses a low-resistance, easily puncturable disposable isolation plug and its preparation process, belonging to the field of isolation plug processing technology. It addresses the technical problem that the puncture and sealing performance of existing isolation plugs needs further improvement. Specifically, it comprises the following components by weight: 70-80 parts isoprene rubber, 10-15 parts modified vulcanization accelerator, 3-5 parts modified self-lubricating capsules, 2-3 parts sulfur, and 1-3 parts excipients. This invention obtains a modified vulcanization accelerator by reacting pretreated chitosan with carbon disulfide, prepares a polyurethane prepolymer using an antibacterial diol, further emulsifies it to form self-lubricating microcapsules, and modifies them with dopamine / graphene oxide. The isoprene rubber is then mixed with the modified capsules and excipients, followed by the addition of the modified vulcanization accelerator and sulfur for open mixing, curing, and vulcanization molding, resulting in a disposable isolation plug with low puncture force, low shedding, and good self-sealing properties.

This application relates to a heating furnace for carbon disulfide production, belonging to the technical field of carbon disulfide production. It includes: a furnace body, including an outer furnace box body, an inner furnace box body and support pipes; a sulfur supply assembly, including a combustion chamber, a liquid sulfur pipe and a nozzle; a methane supply assembly, including a methane gas pipe, a transfer piece, a connecting pipe and a mixing plate; a mixing assembly, including a rotating blade, a driving fan blade, a bevel gear ring, a bevel gear and a guiding fan blade; an exhaust assembly, including a first discharge pipe, a second discharge pipe, a third discharge pipe and a fourth discharge pipe; by uniformly introducing gaseous sulfur and methane gas into the inner furnace box body and stirring and turning the gaseous sulfur and methane gas through the mixing plate, the sulfur and methane are easily mixed evenly, which can increase the output of carbon disulfide and is conducive to the efficient production of carbon disulfide. This application has the effect of improving the mixing degree of sulfur and methane.

The present application relates to a tail gas incineration furnace for carbon disulfide production, which relates to the technical field of sulfur chemical industry. The furnace comprises a reaction furnace for incinerating tail gas and oxygen, one end of which is connected to a first exhaust pipe; a second exhaust pipe fixedly installed in a heat preservation furnace, the second exhaust pipe being connected to an end of the first exhaust pipe away from the reaction furnace, and exhaust ports being evenly arranged on the second exhaust pipe; a mixing furnace fixedly installed in the heat preservation furnace, the mixing furnace being used to mix tail gas and oxygen; a tail gas intake assembly mounted on the mixing furnace, the tail gas intake assembly being used to pass tail gas into the mixing furnace; and an oxygen intake assembly mounted on the mixing furnace, the oxygen intake assembly being used to pass oxygen into the mixing furnace. The present application has the effect of saving energy consumption of the tail gas incineration furnace and reducing the operating cost of the tail gas incineration furnace.

The invention belongs to the field of pesticides, and discloses a compound with a structure as shown in a formula I. A preparation method of the compound comprises the following steps: reacting anthranilic acid with formamide, and then reacting with 1, 4-dibromobutane under the action of sodium hydride to obtain 3-(4-bromobutyl) quinazoline-4 (3H)-ketone; then, phenylacetic acid sequentially reacts with methyl alcohol, hydrazine hydrate, potassium hydroxide, carbon disulfide and 3-(4-bromobutyl) quinazoline-4 (3H)-ketone, and the quinazolinone derivative containing the oxadiazole unit is obtained. The quinazolinone derivative containing the oxadiazole unit is a novel compound, has an inhibiting effect on fusarium graminearum, rhizoctonia solani and botrytis cinerea, and can be used for preventing and treating plant diseases caused by fungi.

The present application relates to the technical fields of reaction furnace, in particular to a kind of inner heating type continuous semi-coke method carbon disulfide reaction furnace without harmful gas emission, including shell, the inner chamber of the shell is equipped with reaction kettle, the outer surface wall of the reaction kettle is connected with sulphur pipe that penetrates the lateral wall of shell, the bottom of the reaction kettle is connected with discharge pipe, the discharge pipe is directly below being provided with discharge bin, the top side of the discharge bin is connected with the discharge pipe between anti-leakage outer frame, the side of the discharge bin is equipped with driving motor, the one end of the driving motor is equipped with threaded transmission rod that penetrates the lateral wall of discharge bin inner chamber;The present application utilizes the waste heat of exhaust gas, heats neutralizing liquid, so that atomization effect is better, improves work efficiency, reduces the production cost of user, simultaneously can also adjust the volume of first discharge bin and second discharge bin, further adjusts the adding amount according to different granularity semi-coke, and makes the inactivated activated carbon plate revive, improves the versatility and durability of device.

The invention discloses a composite organic solvent for removing organic sulfur in coke oven gas, which relates to the technical field of desulfurization and comprises an organic sulfur selective absorbent, an active substance and water, the organic sulfur selective absorbent is configured to selectively absorb organic sulfur; the active substance is configured to be capable of accelerating the absorption speed of the organic sulfur selective absorbent on organic sulfur; wherein the weight percentage of the organic sulfur selective absorbent is greater than or equal to 76wt% and less than or equal to 89wt%, and the weight percentage of the active substance is greater than or equal to 1.5 wt% and less than or equal to 2wt%. The invention also discloses an application of the composite organic solvent for removing the organic sulfur in an organic sulfur substance containing CS2. The composite solvent provided by the invention can effectively remove organic sulfur, especially carbon disulfide with higher content, in coke oven gas, the total organic sulfur removal rate can be up to 80% or above, meanwhile, the composite solvent has good selective absorption on inorganic sulfur (hydrogen sulfide), and the composite solvent can be recycled, has no secondary pollutant emission and is high in economic benefit.

This invention discloses a bifunctional photocatalyst that modulates the hydrophobic interface of elemental sulfur (S) using aminated g-C3N4, its preparation method, and its application. The preparation method includes the following steps: (1) Preparation of aminated g-C3N4: Melamine is calcined and then ground to obtain g-C3N4; g-C3N4 and urea are dispersed in ethylene glycol, followed by a high-temperature reaction, and finally centrifuged, washed, and dried to obtain aminated g-C3N4; (2) Preparation of S / aminated g-C3N4: Aminated g-C3N4 is dispersed in ethanol to obtain dispersion A; elemental sulfur is dissolved in carbon disulfide to obtain solution B; solution B is then added to dispersion A, and the mixture is stirred at room temperature until the solvent is completely evaporated to obtain the bifunctional photocatalyst that modulates the hydrophobic interface of elemental sulfur (S) using aminated g-C3N4. The bifunctional photocatalyst of this invention has excellent stability and reproducibility. After five consecutive cycles, the catalytic activity did not show a significant decrease, demonstrating good cycle durability.

This invention relates to a continuous flow method for preparing taurine, comprising the following steps: S1, using an alkaline solution of ethanolamine and a carbon disulfide solution as raw materials, simultaneously introducing them into a pressurized first continuous flow reactor to react and obtain a first reaction solution; S2, cooling, filtering, washing, and extracting the first reaction solution to obtain thiazolium-2-thione; S3, dissolving thiazolium-2-thione in an organic acid to obtain a thiazolium-2-thione solution; using the thiazolium-2-thione solution and hydrogen peroxide solution as raw materials, simultaneously introducing them into a second continuous flow reactor to react and obtain a second reaction solution, which is then post-treated to obtain taurine. This invention provides an ideal synthetic route, and through continuous flow reaction, the reaction time is short, resulting in high yield and purity of taurine, effectively reducing costs; the process is simple to operate, safe, and efficient, facilitating large-scale industrial production.

To provide a method for effectively utilizing carbon contained in a battery material.SOLUTION: The method for producing a recycled material includes the following (a) and (b). (a) preparing a battery material; (b) Carbon contained in the battery material is reacted with sulfur to produce carbon disulfide.SELECTED DRAWING: Figure 1

The application discloses a preparation method and application of xanthate or composite xanthate, and belongs to the technical field of xanthate flotation reagent preparation. The preparation method comprises the following steps: firstly, carbon disulfide is added into a self-made kneader with a jacket, stirring is started, then a certain proportion of complex alcohol is added, salt water is opened for cooling, and stirring is continuously performed; nitrogen protection is started, and a weighed amount of caustic soda is added into the kneader in step one in batches for reaction preparation. The raw material source of the application is wide, the process operation is simple, the cost is controllable, the prepared composite xanthate has strong collecting capacity and selectivity, and good flotation indexes are obtained in the flotation test.

The invention relates to the technical field of ceramic materials, in particular to calcium lanthanum sulfide transparent ceramic powder and a preparation method and application thereof.The preparation method comprises the following steps that CaS powder and La2S3 powder are placed in a sealed quartz container, the raw materials are mixed to be uniform in an ultrasonic rotation mode, high-temperature swing sintering is conducted in a vacuum state, then slow cooling is conducted to the room temperature, and the calcium lanthanum sulfide transparent ceramic powder is obtained. And grinding to obtain the CaLa2S4 powder. According to the preparation method of the CaLa2S4 powder, the problem of sulfur loss can be avoided in a limited mode, toxic and dangerous gas of hydrogen sulfide or carbon disulfide is not used, the preparation method is safe, efficient, easy to operate, low in raw material cost and suitable for industrial batch production, and further development of the infrared transparent ceramic application technology is expected to be promoted.